My friend period date was 3 oct on 14 she had sex within 2hour she took unwanted72 on 18th Oct her withdrawl period started to 21 ,then again she ad sex on 26 Oct ,then on 27 Oct she she Desolved unwanted 72 tablet in panipuri chat n eaten ,todays 1nov,but no withdrawal bleeding ,when it will be ? Or next period will be on which date ? Pls tell